Ya its for the same tank from the pictures. I have to change that, the tank is only 46 gal
. I thought it was a 55, but measurements proved me wrong. The top is 36" wide, so the lights fit perfectly. Yes they are Actinic, Im an idiot and misread the light thinking Actinic was Atlantic. I switched the bulbs in the two fixtures so the blue would turn on earlyer and go off later then the white. Each fixture has one cord, obviously. I just wanted to make sure there was nothing wrong with that. Most fixtures that offer this have two cords, usually one hooked to white and one to blue. The diffrence is they are one unit, with the lights mixed one after the other, so when they are all on it mixes well. Also if I switched it back to one of each bulb in each fixture to even out the light, would turning one on before the other do anything?